1. the management of production safety watermelonWatermelon watermelon melon family as vegetables that people consume Thailand we know for a long time. In addition to the already popular meal results. Best of soft light amounts are also used in many types of cooking. Watermelon is easy-to-grow plants that are grown all over the region of the country Thailand every season all year round. Watermelon grown in almost every type of soil, but they grow well in a soil mix of sand, where there State ruan is a acid alkaline approximately 5.0-7.5 is draining well. So planting watermelon need to emphasize primary prevention every step in Karma County. The care and attention to make watermelon from toxic residues and pest-free and therefore should be considered as follows:Environment 1). Winter is the proper temperature on growth of watermelon.Planting watermelon 2). Due to the lack of market price and there is a watermelon in the middle and at the end of the rainy season, because it will be time to plant watermelon watermelon master is difficult because they do not like the rain a lot will die with the disease wither vine is the most extreme and diseases on. The result is another simple rotten watermelon taste like sweet watermelon will not supply grown in the dry season or in winter. Therefore, it's important to start planting watermelon since the beginning of November to March, and the last harvest in June, which is also the beginning of the rainy season is. Watermelon varieties planted there are 2 varieties are popular.- Soft species commonly known as sugar baby is a breed of round dark green age effect holds about 65 days from one species to another, including sprouts. - Charleston gray varieties, cultivars, namely heavy The result is a light green skin effect results in large circles to harvest age 85 days from sprout.- Varieties of yellow flesh watermelon varieties, hybrids are the result of a round yellow light green dark green stripes, age about 70-75 days to harvest. Planted phase.Planting rows? The length is about 70-100 cm between the phases between the conversion of 5-6 meters.Preparing the soil. For the watermelon is widespread root plants more than 120 centimeters deep and fertile soil to. There is enough moisture. Therefore, if the plough to loosen or dig the ground to have a sub page of the soil airy ruan. And it will help prevent dehydration. In the beginning of the watermelon are growing. Land preparation to face the deep soil, airy soil ruan will make it and to absorb more moisture, and is open to insert its own root melon deep underground, which will allow the roots to find food and water. and help make the plants can use underground water as another bed was so well.วย if it is necessary to plant watermelon in the rainy season should be planted in soil that has been cooled, the bile is a light soil or sand, but if there is a heavy clay or grown quite hard in the face of drought and should be planted watermelon soil deep excavation of the plough, or the most is over. Wan lime at a rate of 100-200 kg/Rai. Put the compost or fertilizer, fertilizer, farm the stable rate of 1000 kg/15-15-15 rate formula, 50 kg/Rai and Boca 1-2 kg/Rai raek lifted 30 cm high, around 1 m with black plastic. On the other side of plastic mesh covering so that the plants by adhesion, and go in the same direction. It is easier to maintain because the plastic keeps the moisture and prevent weeds.3). care and harvest.- Watering after planting in early if you want to water every day, dry soil, but if the watermelon is about 1-foot long cars start frying up to very humid, water regularly, do not. If the soil moisture must be very drained immediately.- Fertilizer application For the first time, the rate of urea fertilizer 2-3 grams/ton. After 5-7 days moved to plant fertilizer 15-15-15-20-25 kg/Rai rate after the results, by embedding. 13-13-21 fertilizer rate 20-25 kg/Rai before harvesting 2-3 weeks.- Harvest. After approximately 25-30 days, the first flowers start off must be started to pick off the second flower.2. prevent and eliminate pest servicesThe mixed vegetable pest management This activity when the vegetables are growing, there will be a pest. Natural enemies come Much less, depending on the environment, therefore, the farmer must select the method of integrated pest management for vegetables, which are operating procedure is as follows:2.1. the farmers into converting the track and save the following two times per week on a regular basis since the brave until the output is stored.1). growing vegetablesVegetable pest/2) natural enemies.3) environment.2.2. analysis of the data and determine the choice of vegetable pest management/managing natural enemies/environmental management/handling of vegetables, according to the following method.1). how to modify Karma County is an environment. Per pot life and reproduction of pests of vegetables such as water management. Cutting the weeds to loosen soil. To keep burning, lifting height (rainy season) to make adjustments to the soil drainage Groove.2 mechanical method is) reduce the amount of vegetable pest traps lure the slit by the destruction, including the use of Saudi host nadam (summer) covers the use of the plastic cover conversion. The use of yellow sticky glue traps3. How is physical) reduce the amount of vegetables using the pest factors, physical, i.e. the use of lighting, the use of solar thermal.4. biological methods are used), the benefits from natural enemies, which consists of a tuabian resin and hostile predator to control pests, vegetables are low: roll roll destroyer spider wasps drowned bien a Phan Thi Les bacteria BT virus n p v noeni Mar quarter, reflecting a spray of earthworms.5 natural extracts help) from the herbs is to reduce the quantities of vegetables using the pest.Chemicals extracted from natural herbs that qualifies as organic The substance inhibits eating, and are killed, including Neem (reflecting zamani), Tiger Lake, tobacco, lavender. Aloe juice6). how to use the chemicals are synthetic chemicals used to control pests of vegetables for this method must be a method of last resort, and the use of pest control correctly and violated by the side of a container, label, strictly.Therefore, the use of the substance, even though it be prevent pest control method that is very easy to use. Convenient, quick results, but the use of the substance to kill insects correctly and efficiently. Do not make a pest resistance was not created, causing a toxic hazard to the user. Consumers and the environment. The user will need to know the plants and insect pests. Natural enemies in order to properly consider the things which.
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